Fish-screen.



A. HOWARD. FISH SCREEN. APELIOATION FILED SEPT. 12, 1910.

` 992,568. d Patenteamayle, 1911.

The object of. my invention is the pro- 'Be itknown1that I, THOMAS `Toselliitiluprz itvmayconccrm A x A. HOWARD, a-"ci'tizen Yof the United States, residing aty"vllu'rray, in the county of Salt Lake and State of Utah, have invented certain new and useful Improvements in Fish-Screens, of which the following isa specication..

My invention "relates to improvements in i screens, and has particular reference itoscreensadapted tobc placed in a stream,

canal or other waterway which will prevent the-passage of ish therethroughvlwhile assisting in theremoving of thedebris in the' streaml-and preventing thecollection thereof. A

vision. ofa screen of this character espethe screen. or thefoot'o'f thefdam or gate..

- cially adapted for use at dams or gates which will'pi'event thevsh in the stream from passlng-'therethrough and which-will prevent the collecting -of debrisagainst either T -bu-t will cause said'debris tojpass over the obstruction and pass on down-'the stream. j' To attain the desired?.A object, my v`invention {comprises-a sectional revolving fish screen extending fromA the bottom of the waterway. to 'a point abdvethe high water mark thereof, and meansfor revolving saidscreen, the invention further residing in the novel features of construction and combinaf -tioand arrangement ofparts for service i substantially as hereinafter described and as 'illustrated in-.the yaccompanying drawings.

Figurevl represents a side elevation ofmy' Ycomplete screen and` mechanismy for operat- ,111g the same shown 1ny position for use. Eig.4 2 represents .an elevation] of .the mechanism looking upstream. 3v represents enlarged detailed view of the screen por# tion of the. invention, and, 'Figa-4 represents a 'similar view off the supporting'- chain es'- pecially illustrating-the method of securing thefscreen sections thereto. Y. sy .In the drawings, the numeral 1. desig- "enates Ithe bottom or anchor beam of the 'supe porting frame, said beam beingwlocated at the bottom of the waterway and having the ,j.- side members 2 rising therefrom and connected at theiruppereendsvby the cross-'bar 3, lateral braces 4: yextending fromthe members2 to the bank 5 of the waterway to sev cure-said frame invposition. y Journaled in the base-of the lmembers 2is the shaft 6 bearing the' sprockets 7, whilejjournaled'in the upper end of'lsaidmembers l is-a 'shaft/8,

i Specification of Lettersllatent.d Patent' Application-.mea september 142, 1ero. serial No) 51,741.f

' e bearing sprockets 9v side at" stated intervals i of chains and" `it will be seen that saidf Aangles-,a

.contacted with by the our l Mountedron" one end .large gear wheell for. vthrough 1the mediumy "connections, and' asv said the' -k sprocket chains and or MURRAY, UTAH around the sprockets 7 d f I @zo ifm,.- the frame andthe chainsbelngfor w y ears 11 projecting therefrom on the outer 6 cured to said'ears and holdin relation. v j

Pivotally mountedgupon the ears 13 of the framee pend from the bars, the sa g pifefi erably located 'near but-nq ,t `-'the-ledge'o the frame which projeets on 4both f des thereof, as best shown iniligl ro h size as to slightly4 overla is in vertical or incline frames 14 are each coveredbyliefsuitable screening material lfandtogeth fornita single screen member whe as shown inFigs. 1f and` carried thereby pass 'oy main frame and downth L Stream 'side thereof; It that the rearA edges 17 of tact with the chains a to project upward at an cute downward movement,h

g thee .A 'Pivotally supportedby the shaftl 8 are thesupplemental `frame members 19 held in spaced-relation onthe sha-ftfS by- 'the collars 20, said membersV extending down.-

wardfand having the shaft 21 journaled in 100 their lower ends, said shaft bearingja water or paddle `wheel 22 and a' gear wheel 23 and having its outer 'gear-bearing end supported bythe bracket' 24 carried by one of the members 19. Secured tov the lower ends of thesupplemental frame members 19 are the bars 25 having theirother endssecured Ito. a float26, said`ioat serving to support the said lower ends andwaterwheel 22 at A the correct height above thel water t0 insure 110 the .most elicient operation thereof, -:the .floatresting Vupon the water' and rising: and? l of, the frame 19 swinging on the shaft 8 as a pivot. l Journaled in the member 19 and the bracket 24 is a stud shaft 27 bearing on one end a pinion 28 in mesh with the Lgear 23 and on the other end a sprocket 29 connected by a chain'O with the sprocket or gear 16 for driving the shaft and revolving the screen upon the revolution of the Water Wheel. l

From the foregoin description taken in connection with therawings the construction and operation of my improved fish screen will be readily understood .and its advantages fully apparent, andit will be seen that I have provided an improved ish screen in which the screen sections on their upward travel form a tight overlapping joint with each other to provide a screen through which the fish cannot pass, while said screen extends so 'close to therbottom of the stream .as to prevent thel fish from passing thereunder7 this being further prevented by the sections'of the screen hanging to practically scrape the bottom as they pass around the lower sprocket Wheels,

while the position in which said sections hang on their downward movement causes all debris carried upward thereby to drop into the water jor -be Washed therefrom-by the current of thefvvaterl as they come down"t into contact-therewith. ItvvillY be furtherA observed that I have provided. improved means for driving or rotatingl said sect'ibnal screen and for maintaining the saiddriving means automatically at the samerelative'pof" sition with'respect both tothe shaft'S andv the surface ci the waterirrespective of height of the-water or whetherit isfat its highest or lowest mark. i e

It will be further understood that while I have illustrated my improved sectional .revolving screen as located at a dam or'gate `with the screen thereaboveland the driving lmechanism therebelow that the entire mech- I' an'ism may'l be located at 'someother point in the Waterway than said obstruction, and

that instead tof my speciicform of driving' means I may employ an overshot wheel.lo'

cated under the fall or any other suitablemeans for rotating the .shaft 8. 'I claim:

1. A sectional revolving sh screen, comprising a frame rising from the bottom of the Waterway, a pair of shaftsjournaledA lsov near the opposite ends of the frame and bearing sprocket wheels, chains connecting the sprockets, bars for retaining the chains in spaced relation, overlapping screen sections pivotally secured to said bars, a Alarge sprocket carried yby one of the shafts, a

sprocket vvith'the Wheel for revolving the said shaft and thus the sectional screen.

3. A fish screen, comprising-a main frame rising from the bottom of the Waterway, a revolving, sectional screen carried thereby,

`a shaft Ain the frame around which said screen passes, a supplemental'frame depend- @water wheel, and a chain connecting theY ing from' said shaft and pivotally supported" thereby, a oat earried'by the lower end of said supplemental gframe, a wa'tery wheel supported by the supplemental frame ad- .jacent the oatand having its shaft jour naled jin said supplementalframe, and connections ,between the said shaft and the shaft carried by the main frame for re-` v .olving-the latter to operate the screen.

Intestimony Where'oil aHX my signature,

in presence of two Witnesses THOMAS A. HOWARD. 'Witnesses i B. S'roU'r, lJESSE C. ,CASPER- 

